hakmem/core/smallobject_hotbox_v5.c

// smallobject_hotbox_v5.c - SmallObject HotBox v5 実装 stub（Phase v5-0）
//
// この段階では完全な fallback stub。v5 route は呼ばれない（ENV default OFF）。

#include <stdlib.h>
#include <stdbool.h>
#include "box/smallsegment_v5_box.h"
#include "box/smallobject_hotbox_v5_box.h"
#include "box/smallobject_cold_iface_v5.h"
#include "box/smallobject_v5_env_box.h"

// TLS context
static __thread SmallHeapCtxV5 g_small_heap_ctx_v5;

SmallHeapCtxV5* small_heap_ctx_v5(void) {
    return &g_small_heap_ctx_v5;
}

// Phase v5-0: Fast alloc（stub）
void* small_alloc_fast_v5(size_t size, uint32_t class_idx) {
    (void)size;
    (void)class_idx;
    // v5-0: completely disabled, fallback to existing path
    // actual implementation in v5-2
    return NULL;
}

// Phase v5-0: Fast free（stub）
void small_free_fast_v5(void* ptr, uint32_t class_idx) {
    (void)ptr;
    (void)class_idx;
    // v5-0: no-op
    // actual implementation in v5-2
}

// Segment stub（v5-2 で実装）
SmallSegmentV5* small_segment_v5_acquire(void) {
    return NULL;  // stub
}

void small_segment_v5_release(SmallSegmentV5* seg) {
    (void)seg;
    // stub
}

SmallPageMetaV5* small_segment_v5_page_meta_of(void* ptr) {
    (void)ptr;
    return NULL;  // stub
}

// ColdIface stub（v5-2 で実装）
SmallPageMetaV5* small_cold_v5_refill_page(SmallHeapCtxV5* ctx, uint32_t class_idx) {
    (void)ctx;
    (void)class_idx;
    return NULL;  // stub
}

void small_cold_v5_retire_page(SmallHeapCtxV5* ctx, SmallPageMetaV5* page) {
    (void)ctx;
    (void)page;
    // stub
}

bool small_cold_v5_remote_push(SmallPageMetaV5* page, void* ptr, uint32_t tid) {
    (void)page;
    (void)ptr;
    (void)tid;
    return false;  // stub
}

void small_cold_v5_remote_drain(SmallHeapCtxV5* ctx) {
    (void)ctx;
    // stub
}